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Power Systems

Power Systems
A loss less transmission line has a length of 600 km, find the phase shift of voltage signal?

 36°
 42°
 45°
 90°

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Power Systems
Bundled conductors are used for EHV transmission lines primarily for reducing the

 surge impedance of the line
 corona loss
 voltage drop across the line
 copper loss

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Power Systems
A transmission line is operating under no load has ABCD parameters B = 100∠90° has a phase shift of 0.2 rad, how much shunt reactor is required for compensation of ferranti effect?

 2 H
 2 mH
 15.9 mH
 15.9 H

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Power Systems
Stock bridge dampers are used to

 reduce the tension
 increase the sag
All of these
 reduce the vibrations at the point of support

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Power Systems
The essential requirement(s) for power plants to be operated as peak load plants are

 Capability of quick starts.
All of these
 Low capital cost.
 Quick response to load variation.

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Power Systems
Making current is a------------ value?

 any of the above
 peak value
 average
 RMS

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